modify db:seed to empty the MongoDB database before creating a defaul…

…t user

README.textile

@@ -153,6 +153,8 @@ h3. Set Up a Database Seed File
 You'll want to set up a default user so you can easily log in to test the app. You can modify the file *db/seeds.rb* for your own name, email and password:
 
 <pre>
+puts 'EMPTY THE MONGODB DATABASE'
+Mongoid.master.collections.reject { |c| c.name == 'system.indexes'}.each(&:drop)
 puts 'SETTING UP DEFAULT USER LOGIN'
 user = User.create! :name => 'First User', :email => 'user@test.com', :password => 'please', :password_confirmation => 'please'
 puts 'New user created: ' << user.name

TUTORIAL.textile

@@ -429,6 +429,8 @@ h3. Set Up a Database Seed File
 You'll want to set up a default user so you can easily log in to test the app. Modify the file *db/seeds.rb* by adding:
 
 <pre>
+puts 'EMPTY THE MONGODB DATABASE'
+Mongoid.master.collections.reject { |c| c.name == 'system.indexes'}.each(&:drop)
 puts 'SETTING UP DEFAULT USER LOGIN'
 user = User.create! :name => 'First User', :email => 'user@test.com', :password => 'please', :password_confirmation => 'please'
 puts 'New user created: ' << user.name

db/seeds.rb

@@ -5,6 +5,8 @@
 #
 #   cities = City.create([{ :name => 'Chicago' }, { :name => 'Copenhagen' }])
 #   Mayor.create(:name => 'Daley', :city => cities.first)
+puts 'EMPTY THE MONGODB DATABASE'
+Mongoid.master.collections.reject { |c| c.name == 'system.indexes'}.each(&:drop)
 puts 'SETTING UP DEFAULT USER LOGIN'
 user = User.create! :name => 'First User', :email => 'user@test.com', :password => 'please', :password_confirmation => 'please'
 puts 'New user created: ' << user.name

template.rb

@@ -423,6 +423,8 @@ def show
 #----------------------------------------------------------------------------
 puts "creating a default user"
 append_file 'db/seeds.rb' do <<-FILE
+puts 'EMPTY THE MONGODB DATABASE'
+Mongoid.master.collections.reject { |c| c.name == 'system.indexes'}.each(&:drop)
 puts 'SETTING UP DEFAULT USER LOGIN'
 user = User.create! :name => 'First User', :email => 'user@test.com', :password => 'please', :password_confirmation => 'please'
 puts 'New user created: ' << user.name